The Sur-Prep 3500-1 Non-Decorative Interior Structure Surface Prep Kit can be used to prepare the interior structure, fuel tank structure, and wing structure surfaces for painting and sealing. Do not use the the Sur-Prep 3500-1 Non-Decorative Interior Structure Surface Prep Kit for the exterior structure. For the exterior fuselage structure, use the Sur-Prep 3500-2 Exterior Fuselage Structure Surface Prep Kit.
Instructions For Using The Sur-Prep® 3500-1 Non Decorative Interior Structures Surface Prep Kit
Note: Both mating surfaces should be cleaned and conversion coated prior to painting or
(A) Remove any loose paint or sealant with a micarta scraper.
(B) Vacuum area to remove any loose debris, metal shavings, and dirt.
(C) Lightly abrade entire area of parts to be sealed or painted using Step 1 - Scotchbrite with alkaline cleaner. Be sure to remove the alcad identification marking.
(D) Wipe area with Step 2 - Deionized water towel to remove soap residue immediately followed with the dry wipe.
(E) Repeat with a second water wipe and dry the area.
(F) Solvent clean area with Step 3 -Deodorized Citra Safe® wipe. Do not allow the solvent to dry on the surface. Wipe it with the dry wipe.
(G) Apply conversion coating:
For 12 gram kit-Place the unfolded Step 4-conversion coating material towel on the surface.
For 1 oz kit-Unfold the towels and wet with conversion coating material, taking care to keep
conversion coating material off adjacent areas and high strength steel. Place towels
on the surface.
(H) Allow the towels to sit on the surface for 2-5 minutes. Do not allow the conversion coating material to dry on the surface.
(I) Neutralize the conversion coating material by wiping with Step 5 - Deionized water. Immediately follow with the dry wipe.
(J) Place all used towels in plastic bag. Remove all air from the bag and seal. Dispose of plastic bag as hazardous waste. (Caution: DO Not Allow Conversion Coating Material Towels TO Dry Or (Spontaneous Combustion May Occur).
(K) Apply paint or sealant within two hours, if required.
Each Sur-Prep® 3500-1 Non Decorative Interior Structure Surface Prep Kit contains the following:
1) Alkaline Cleaning Solution Pad that is labeled as Step 1.
2) Deionized Water Wipe and Dry Towel that is labeled as Step 2.
3) Citra-Safe® Deodorized Wipe and Dry Towel that is labeled as Step 3.
(Caution: Combustible! Avoid skin and eye contact. In case of skin contact, remove
contaminated clothing and wash skin thoroughly with soap and water. If splashed into eyes,
flush eyes with water for at least 15 minutes or until the irritation subsides. Wear nitrate gloves
and safety glasses or goggles when handling this product. Consult SDS for additional
4) Conversion Coating Material Wipe that is labeled as Step 4.
(Danger: Chromic acid mixture. Corrosive to skin and eyes. Avoid skin and eye contact. Avoid
breathing mist from solution. Wear safety goggles or face shield and nitrate gloves when
handling this product. In case of eye contact, flush eyes with water for at least 15 minutes, and
then seek medical attention. Consult SDS for additional information.)
(5) Step 5 - Deionized Water Wipe and Dry Towel
Available in a 12 gram kit (104087) and a 1 oz kit (104088).
The 12 gram kit is for areas of 1 square foot or less.
The 1 oz kit is for areas of 1 to 3 square feet.